2001 Bonneville tranny problems??? - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 11-25-2009, 05:42 PM   #21
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One thing I notice is that if the top of the shift modulator/accumulator has been dented by the piston, shifts are not smooth. I found that my modulator/accumulator bodies cover had been impacted by the piston on the 1-2 and right by the gasket. I suspect the pressure would build up and then leaked. I replaced the cover and installed the Intense kit and shifts were better and stronger.
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Old 11-25-2009, 06:42 PM   #22
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If you just remove and dissasemble the accumulator assembly, scotch brite the bores and put new seals on the pistons, you will also see a big difference.
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